Can someone help me with these multiple choice questions on Earthquake waves: 1.

Question

Can someone help me with these multiple choice questions on Earthquake waves:

1. Which seismic wave vibrates side-to-side relative to its direction of travel?

surface wave

P wave

S wave

Rayleigh wave

2. The two kinds of body waves are

surface waves and P waves.

Love waves and P waves.

P waves and S waves.

Love waves and S waves.

3. The following seismic waves are used to locate earthquake epicenters:

surface waves and P waves.

Rayleigh waves and P waves.

P waves and S waves.

surface waves and S waves.

surface wave

P wave

S wave

Rayleigh wave

Explanation / Answer

2)P and S waves

Body waves are of two types: compressional or primary (P) waves and shear or secondary (S)waves. P- and S- waves are called "body waves" because they can travel through the interior of a body such as the Earth's inner layers, from the focus of an earthquake to distant points on the surface.

3)P and S waves

The arrival times of P and S waves are used to determine the distance to an earthquake using standard travel-time curves. P & S waves each shake the ground in different ways as they travel through the Earth. P waves are faster than S waves so by looking at seismograms, scientists can accurately locate the epicenter as well as the hypocenter, or focus of the earthquake at depth.

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